How to use Extlinux bootloader?

I wish I could pilot use an alpha 4 version of one linux but I can not get it booting in my computer. I used Grub as boot loader but It is usually booted using Extlinux and will probably start then. I have presented a longer description of the booting problem in http://www.linuxquestions.org/questi...tlinux-624942/

Now I simply need to find practical examples and information how to configure the Extlinux bootloader in my computer. I have previously installed WindowsXP and two linuxes (Mandriva and sidux). The two linuxes use Grub. How to edit Extlinux configuration file to get Windows and other linux's to start?

I have used Google but could not find the information I need.

:roll: